errata: workaround for Neoverse N2 erratum 2138956
Neoverse N2 erratum 2138956 is a Cat B erratum that applies to
revision r0p0 and is still open. This erratum can be avoided by
inserting a sequence of 16 DMB ST instructions prior to WFI or WFE.
SDEN can be found here:
https://developer.arm.com/documentation/SDEN1982442/latest
Signed-off-by: Bipin Ravi <bipin.ravi@arm.com>
Change-Id: I1aac87b3075992f875451e4767b21857f596d0b2
diff --git a/docs/design/cpu-specific-build-macros.rst b/docs/design/cpu-specific-build-macros.rst
index 32df862..bb1bf7b 100644
--- a/docs/design/cpu-specific-build-macros.rst
+++ b/docs/design/cpu-specific-build-macros.rst
@@ -395,8 +395,10 @@
CPU. This needs to be enabled for revision r0p0 of the CPU and is still open.
- ``ERRATA_N2_2189731``: This applies errata 2189731 workaround to Neoverse-N2
- CPU. This needs to be enabled only for revision r0p0 of the CPU and is still
- open.
+ CPU. This needs to be enabled for revision r0p0 of the CPU and is still open.
+
+- ``ERRATA_N2_2138956``: This applies errata 2138956 workaround to Neoverse-N2
+ CPU. This needs to be enabled for revision r0p0 of the CPU and is still open.
DSU Errata Workarounds
----------------------